<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<style>
  a {
    text-decoration: none;
    width: 100px;
    height: 50px;
    background-color: red;
    display: inline-block;
    color: #222222;
    text-align: center;
    line-height: 50px;
  }
  a:hover {
    background-color: orange;
  }
</style>
<body>

<a href="#">导航1</a>
<a href="#">导航2</a>
<a href="#">导航3</a>
<a href="#">导航4</a>
<a href="#">导航5</a>


</body>
</html>
